InChI=1S/C21H22O12/c1-7(8-2-4-9(22)5-3-8)12(23)10-6-11(14(25)15(26)13(10)24)32-21-18(29)16(27)17(28)19(33-21)20(30)31/h2-7,16-19,21-22,24-29H,1H3,(H,30,31)